Harley-Davidson has filed a patent application for a variable valve timing (VVT) V-twin engine, possibly for the Sportster to improve...
Say Goodbye to the All-Mechanical Setup Suzuki’s current GSX-R1000 has a variable valve timing system it got from the GSX-RR Moto...
Indian Motorcycle is not only building a new engine, but also seems to be updating its current Thunderstroke 111 with...